| 发明名称 |
PRESSURE CORE BARREL FOR RETENTION OF CORE FLUIDS AND RELATED METHOD |
| 摘要 |
A pressure coring apparatus comprises a housing having an upper end and a lower end. A valve is coupled to the lower end of the housing and has an open position for entrance of a core and a closed position for retaining and sealing the core within the housing. A piston assembly is moveably disposed within the housing. A first volume is defined within the housing and between the upper end of the housing and the piston assembly. A second volume is defined within the housing between the lower end of the housing and the piston assembly. A pressure relief device is disposed through the housing and operable to maintain pressure within the first volume and the second volume below a target pressure. |
| 申请公布号 |
US2014305712(A1) |
申请公布日期 |
2014.10.16 |
| 申请号 |
US201414253386 |
申请日期 |
2014.04.15 |
| 申请人 |
National Oilwell Varco, L.P. |
发明人 |
WILSON Bobby Talma;MCGEHEE David Young |
| 分类号 |
E21B49/02 |
主分类号 |
E21B49/02 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A pressure coring apparatus comprising:
a housing having an upper end and a lower end; a valve coupled to the lower end of the housing and having an open position for entrance of a core and a closed position for retaining and sealing the core within the housing; a piston assembly moveably disposed within the housing, wherein a first volume is defined within the housing and between the upper end of the housing and the piston assembly, and wherein a second volume is defined within the housing between the lower end of the housing and the piston assembly; a pressure relief device disposed through the housing and operable to maintain pressure within the first volume and the second volume below a target pressure. |
| 地址 |
Houston TX US |
